space formula

13 LETTERS · STARTS WITH S

space formula is a valid 13-letter word worth 21 points in Scrabble and 26 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1P3A1C3E1F4O1R1M3U1L1A1

1 + 3 + 1 + 3 + 1 + 0 + 4 + 1 + 1 + 3 + 1 + 1 + 1 =21 PTS

DOUBLE WORD → 42TRIPLE WORD → 63

MEANING

What does space formula mean?